GHSA-8X3R-QG94-9QH5

Vulnerability from github – Published: 2026-08-15 15:30 – Updated: 2026-08-15 15:30
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: fix QID bit leak in pqm_create_queue()

When MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during the first queue creation for a process, pqm_create_queue() returns early via 'return retval' without going through the err_create_queue cleanup label.

This means clear_bit(*qid, pqm->queue_slot_bitmap) is never called, leaving the reserved QID bit permanently set in queue_slot_bitmap. Over time this leaks QID slots, potentially exhausting all available queue slots.

Fix this by replacing 'return retval' with 'goto err_allocate_pqn' so that clear_bit() is always called on the error path without touching the uninitialized pqn pointer.

AILIKFD-813

(cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)

Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-74448"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T13:17:49Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix QID bit leak in pqm_create_queue()\n\nWhen MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during\nthe first queue creation for a process, pqm_create_queue() returns\nearly via \u0027return retval\u0027 without going through the err_create_queue\ncleanup label.\n\nThis means clear_bit(*qid, pqm-\u003equeue_slot_bitmap) is never called,\nleaving the reserved QID bit permanently set in queue_slot_bitmap.\nOver time this leaks QID slots, potentially exhausting all available\nqueue slots.\n\nFix this by replacing \u0027return retval\u0027 with \u0027goto err_allocate_pqn\u0027\nso that clear_bit() is always called on the error path without\ntouching the uninitialized pqn pointer.\n\nAILIKFD-813\n\n(cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)",
  "id": "GHSA-8x3r-qg94-9qh5",
  "modified": "2026-08-15T15:30:32Z",
  "published": "2026-08-15T15:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74448"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.